There have been reports of very large and very rare pink jellyfish along the Texas coast. They may be a shade of bubblegum, but they can pack a punch and have stinging tentacles as long as 70 feet! Terrifying, Pink Jellyfish Spotted in TexasBehold! In fact, they have a penchant for the beautifully iridescent moon jellyfish. Because of this, they are only ever seen during late summer and early fall when moon jellyfish numbers are at their peak.